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## Homework Statement

A 20.0 cm by 20.0 cm square loop of wire lies in the xy-plane with its bottom edge on the x-axis. The resistance of the loop is 0.520 {\Omega}. A magnetic field parallel to the z-axis is given by B = 0.790 * y^2 * t, where B is in tesla, y in meters, and t in seconds. What is the size of the induced current in the loop at t = 0.550 s?

## Homework Equations

flux = A.B.cos theta

## The Attempt at a Solution

I'm having a hard time understanding this question. I see that cos theta would be one so I can use the formula A B for the flux. But what is the y^2? Is it a variable? How can I construct the d(flux) / dt? I know that the A can be pulled out, and the 0.790 as well, but I'm not sure how to treat the other two.